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Articles 60721 - 60750 of 61515
Full-Text Articles in Entire DC Network
The Circular Restricted Four Body Problem Is Non-Integrable: A Computer Assisted Proof, Shane Kepley
The Circular Restricted Four Body Problem Is Non-Integrable: A Computer Assisted Proof, Shane Kepley
Electronic Theses and Dissertations 2010 - 2019
Gravitational N-body problems are central in classical mathematical physics. Studying their long time behavior raises subtle questions about the interplay between regular and irregular motions and the boundary between integrable and chaotic dynamics. Over the last hundred years, concepts from the qualitative theory of dynamical systems such as stable/unstable manifolds, homoclinic and heteroclinic tangles, KAM theory, and whiskered invariant tori, have come to play an increasingly important role in the discussion. In the last fty years the study of numerical methods for computing invariant objects has matured into a thriving sub-discipline. This growth is driven at least in part by …
Teacher Perceptions Of Technology Integration Professional Development In A 1:1 Chromebook Environment, Eleonora Yankelevich
Teacher Perceptions Of Technology Integration Professional Development In A 1:1 Chromebook Environment, Eleonora Yankelevich
Electronic Theses and Dissertations 2010 - 2019
A variety of computing devices are available in today’s classrooms, but they have not guaranteed the effective integration of technology. Nationally, teachers have ample devices, applications, productivity software, and digital audio and video tools. Despite all this, the literature suggests these tools are not employed to enhance student learning according to best practices. The purpose of this qualitative case study was to describe and understand perceptions of a technology integration professional development (TIPD) experience of elementary teachers at a suburban, independent school. The TIPD was an ongoing, 40-minute class led by a technology specialist, taking place in teachers’ classrooms, engaging …
The Advantages Of Collimator Optimization For Intensity Modulated Radiation Therapy, Brian Doozan
The Advantages Of Collimator Optimization For Intensity Modulated Radiation Therapy, Brian Doozan
Electronic Theses and Dissertations 2010 - 2019
The goal of this study was to improve dosimetry for pelvic, lung, head and neck, and other cancers sites with aspherical planning target volumes (PTV) using a new algorithm for collimator optimization for intensity modulated radiation therapy (IMRT) that minimizes the x-jaw gap (CAX) and the area of the jaws (CAA) for each treatment field. A retroactive study on the effects of collimator optimization of 20 patients was performed by comparing metric results for new collimator optimization techniques in Eclipse version 11.0. Keeping all other parameters equal, multiple plans are created using four collimator techniques: CA0, all fields have collimators …
Technology, Textbooks, And Mathematics: Perceptions Of Online Math Homework From Traditional High School Students Enrolled In Private Schools, Gisselle Gutierrez
Technology, Textbooks, And Mathematics: Perceptions Of Online Math Homework From Traditional High School Students Enrolled In Private Schools, Gisselle Gutierrez
Electronic Theses and Dissertations 2010 - 2019
This research study employed both quantitative and qualitative methodology to explore high school students’ perceptions about online math homework and paper math homework. The purpose of this study was threefold: to understand how high school students perceive online math homework, to determine what aspects of online math homework aid and/or hinder student learning, and to improve the student learning experience with online math homework. Through quantitative analysis, the researcher noted that although not all students learned best with online math homework, nearly every student used the online tools provided when assigned online math homework. Through qualitative analysis, the researcher noted …
The Directionality Of Person-Situation Transactions: Spill-Over Effects Among And Between Situation Experiences And Personality States, Ashley Bell Cooper
The Directionality Of Person-Situation Transactions: Spill-Over Effects Among And Between Situation Experiences And Personality States, Ashley Bell Cooper
Electronic Theses and Dissertations 2010 - 2019
To elucidate temporal sequences among and between person and situation variables, this work examines cross-measurement spill-overs between situation experiences S (on the Situational Eight DIAMONDS characteristics) and personality states P (on the Big Six HEXACO) in experience sampling data in two studies. Multilevel modeling of lagged data at tn-1 and non-lagged data at tn grants the opportunity to examine (a) the stability (P --> P, S --> S), (b) cross-sectional associations (S <--> P), and (c) cross-lagged associations among and between situation experiences and personality states (S --> P, P --> S).
The Effect Of A Heart Failure Nurse Navigator On 30-Day Hospital Readmissions Of Older Adults, Mary Ann M Leavitt
The Effect Of A Heart Failure Nurse Navigator On 30-Day Hospital Readmissions Of Older Adults, Mary Ann M Leavitt
Electronic Theses and Dissertations 2010 - 2019
Across the US, 22% of Medicare patients hospitalized with a diagnosis of heart failure (HF) will be readmitted within 30-days of discharge. There is no one costeffective process identified to help patients transition home and maintain their own selfcare. The aim of this study is to compare readmission rates, HF knowledge, self-care, and quality of life for patients who transition home from the hospital under the care of a Heart Failure Nurse Navigator (HFNN) with patients who receive usual care. The HFNN is a home health RN with specialized training in HF care. The HFNN visited intervention group (IG) participants …
The Effect Of Fluid Flow On Human Sperm Fertility, Kari Rappa
The Effect Of Fluid Flow On Human Sperm Fertility, Kari Rappa
Electronic Theses and Dissertations 2010 - 2019
Current sperm processing methods used in assisted reproductive technologies can cause damage to the sperm cell. New ways that mimic the natural guidance mechanisms present in the female genital tract may offer ways to sort sperm with better fertility parameters. Sperm that respond to these cues may have better over sperm health. Human sperm exhibit positive rheotaxis by orienting and swimming against the fluid released by the female genital tract. At certain flow rates sperm can actively orient and swim against the flow. Sperm retrieved that exhibit positive rheotaxis have higher motility and better morphology than the original semen sample.
The Effect Of Alliance Portfolio Size On Firm Performance Revisited: The Role Of Firm- And Portfolio-Level Contingencies, Barreto Tais Siqueira
The Effect Of Alliance Portfolio Size On Firm Performance Revisited: The Role Of Firm- And Portfolio-Level Contingencies, Barreto Tais Siqueira
Electronic Theses and Dissertations 2010 - 2019
Alliance portfolios, or a firm collection of simultaneous alliances, have become common phenomena particularly in technology industries. These portfolios have been found to have a significant impact on firms’ financial performance. At the same time, there is little consensus regarding the direction of this effect. Findings have shown positive, negative, curvilinear, and non-significant relationships. In this dissertation, I employed an organizational learning perspective to investigate the effect of alliance portfolio size on firm financial performance. Using a sample of 343 firm-year observations in the U.S. software industry, I explored portfolio- and firm-level characteristics as moderators of this relationship. Findings provide …
The Diamonds At Work: Applying The Diamonds Dimensions To Occupations, Steven Bell
The Diamonds At Work: Applying The Diamonds Dimensions To Occupations, Steven Bell
Electronic Theses and Dissertations 2010 - 2019
Just as people can be described by traits, situations can be described by the “Situational Eight” DIAMONDS (Duty, Intellect, Adversity, Mating, pOsitivity, Negativity, Deception, Sociality) (Rauthmann et al., 2014). Based upon the common occurrence of situations in combinations unique to different occupations the current study sets out to (1) map the DIAMONDS dimensions into the workplace and (2) examine the relationships between the DIAMONDS dimensions and other measures of work contexts (Skill, Abilities, Knowledge, etc.). Through the use of a modified version of the S8* (Rauthmann & Sherman, 2014), the DIAMONDS dimensions were correlated with scored responses of either individuals …
The Effect Of Stereoscopic Cues On Multiple Object Tracking In A 3d Virtual Environment, Steven Milanez Oliveira
The Effect Of Stereoscopic Cues On Multiple Object Tracking In A 3d Virtual Environment, Steven Milanez Oliveira
Electronic Theses and Dissertations 2010 - 2019
Research on Multiple Object Tracking (MOT) has typically involved 2D displays where stimuli move in a single depth plane. However, under natural conditions, objects move in 3D which adds complexity to tracking. According to the spatial interference model, tracked objects have an inhibitory surround that when crossed causes tracking errors. How do these inhibitory fields translate to 3D space? Does multiple object tracking operate on a 2D planar projection, or is it in fact 3D? To investigate this, we used a fully immersive virtual-reality environment where participants were required to track 1 to 4 moving objects. We compared performance to …
The Evolution Of General Strain Theory: A Comprehensive Review And Test Of Robert Agnew’S 2002 Extension, Krystal Davidowitz
The Evolution Of General Strain Theory: A Comprehensive Review And Test Of Robert Agnew’S 2002 Extension, Krystal Davidowitz
Electronic Theses and Dissertations 2010 - 2019
This thesis provides a comprehensive review of the evolution of Robert Agnew’s General Strain Theory of Delinquency, and tests his 2002 extension using two subsamples from the 2013 National Survey on Drug Use and Health: Juveniles between 12 and 17, and “emerging” adults that are 18 years old. Including an “emerging” adult subsample makes this analysis one of the first full tests of adults. Additionally, this analysis is the first partial test of Agnew’s 2013 extension of General Strain Theory. Overall, the results of the analysis lend support to Agnew’s 2002 extension. Measures of strain are revealed to significantly effect …
The Estimation Of Ancestry And Sex In Unknown Individuals Through A Comparison Of Methods, Alexandra N. Thomas
The Estimation Of Ancestry And Sex In Unknown Individuals Through A Comparison Of Methods, Alexandra N. Thomas
Electronic Theses and Dissertations 2010 - 2019
When unidentified skeletal remains are found, researchers utilize a number of methods to apportion details for a biological profile. While these practices are used and professed through generations of students, they also require a reevaluation of the methods. This project estimates the ancestry and sex of nine unknown skeletal individuals through two different mechanisms. Modified biological profiles were completed through two different methodologies: anthroscopic traits (Buikstra and Ubelaker 1994; White et al. 2012) and geometric morphometrics using 3D-ID (Slice and Ross 2009). The results serve two purposes: (1) to provide ancestry and sex (2) to compare two methodologies through outcomes …
The Effect Of Participation In The Ready To Learn Program On Kindergarten Students’ Pro-Social Behavior, Self-Regulation, Reading Performance, And Teachers’ Perception Of Classroom Climate, Summer Perhay Kuba
Electronic Theses and Dissertations 2010 - 2019
The purpose of the current study was to investigate the difference in pro-social behavior, self-regulation, overall reading performance, Lexile levels, and teachers’ perception of classroom climate of kindergarten students who received the Ready to Learn (RTL; Brigman, Lane, & Lane, 2008) classroom guidance program (treatment group: n = 173) and kindergarten students who did not receive the intervention (comparison group: n = 124). The study followed a quasi-experimental, comparison group design in which teachers completed the Child Behavior Rating Scale (CBRS) and Teacher My Class Inventory-Short Form (TMCI-SF) measures as well as collected reading data from individual students. Descriptive statistics …
The Impact Of Motivational Interviewing Training On Rehabilitation Counselors: Assessing Working Alliance And Client Engagement. A Randomized Controlled Trial, Ayse Torres
Electronic Theses and Dissertations 2010 - 2019
The purpose of this study was to assess the impact of motivational interviewing (MI) counselor training in a public vocational rehabilitation (VR) setting. Data were collected from a total of 347 participants (67 counselors and 280 clients) in the experimental and comparison groups, during the pre-and-posttests. The counselors in the experimental group received a 4-hour standardized MI training and a 4-week follow up coaching sessions. Results of this study indicated that counselors in the experimental group demonstrated significant gains in their MI competence scores compared to the comparison group. The clients of the experimental group’s counselors significantly improved their engagement …
The Effects Of Competition On Empathy And Prosociality, Corinne Gilad
The Effects Of Competition On Empathy And Prosociality, Corinne Gilad
Electronic Theses and Dissertations 2010 - 2019
The current research investigated the effects of competition on empathy and prosociality in two studies. Study 1 aimed to explore associations between competition and prosociality by asking participants to play a computer puzzle game that was either high or low on competitiveness, and then to complete measures of empathy, perspective taking, compassionate love and willingness to sacrifice for a romantic partner. Study 1 found a marginally significant difference across conditions for perspective taking, a marginally significant gender interaction for perspective taking, and a significant gender by condition interaction for compassionate love, in support of hypotheses that competition reduces prosocial responses …
The Impact Of Icoaching On Teacher-Delivered Opportunities To Respond, Kathleen M. Randolph
The Impact Of Icoaching On Teacher-Delivered Opportunities To Respond, Kathleen M. Randolph
Electronic Theses and Dissertations 2010 - 2019
Employment coaching is essential for performing job duties and for developing and enhancing skills. Coaching in the school setting typically follows the traditional format of pre-conference, observe, and post-conference, where feedback on teaching performance is shared but often delayed. Professional development provides teachers with skills to enhance their teaching practice with little to no follow-up or support. The most effective way to produce change in the school setting is to show the connection between professional development and student performance, and iCoaching can help to bridge the gap. Research shows that effective feedback is immediate, systematic, positive, constructive, and detailed (Scheeler …
The Multitude Speaks In Style: An Analysis Of Vernacular Agency Through Images Of Ruth Bader Ginsburg, Haley Swartz
The Multitude Speaks In Style: An Analysis Of Vernacular Agency Through Images Of Ruth Bader Ginsburg, Haley Swartz
Electronic Theses and Dissertations 2010 - 2019
The unexpected comparison of a Supreme Court Justice with a popular culture icon demonstrates how politics and popular culture become entwined in the contemporary context; moreover, network culture provides a conduit for vernacular discourse about politics, which circulates in the style of popular culture. Through analysis of images of Ruth Bader Ginsburg as created, shared, and circulated in network culture, this project explores the alternative levels of discourse generated in network culture, examines the ways the public represents politics, and explains the ability of political subjects to affect meaning. The aim of this project is to document a conjunctural moment; …
The Journey Of Art Doll: World-Building In Contemporary Narrative, Robin E. Taber
The Journey Of Art Doll: World-Building In Contemporary Narrative, Robin E. Taber
Electronic Theses and Dissertations 2010 - 2019
Games, movies, television, and interactive media make use of World-Building. World-Building essentially creates an elaborate invented universe in order to give a story context. In other words it generates a back-story designed to enhance the cathartic experience and promote engagement by the reader, viewer or participant. Some examples of World-Building include Halo, World of WarCraft and Game of Thrones. Stories need context to be fully understood and experienced. One describes a situation, the environment, sensations, smells, sounds and sensory perception to give the audience a fuller, richer experience. World-Building provides context through history, textures, laws, physics and motivations. The written …
The Impact Of Undergraduate Research Participation On Research Self-Efficacy, Tracy N. Baker
The Impact Of Undergraduate Research Participation On Research Self-Efficacy, Tracy N. Baker
Electronic Theses and Dissertations 2010 - 2019
Current literature confirms that self-efficacy, academic self-concept, and participation in undergraduate research influence the academic performance and aspirations of students. However, a gap in the literature remains as research has yet to explore whether students who have participated in research have a higher sense of research self-efficacy and academic self-concept than students who have not participated in these activities. In addition, it is unknown whether undergraduate researchers pursuing STEM degrees differ from students pursuing non-STEM degrees, nor if they vary by gender. The purpose of this study was to investigate the research self-efficacy and academic self-concept of undergraduate researchers, compare …
The Lived Experience Of Breastfeeding For Women With Perinatal Depression, Beth A. Pratt
The Lived Experience Of Breastfeeding For Women With Perinatal Depression, Beth A. Pratt
Electronic Theses and Dissertations 2010 - 2019
Exclusive breastfeeding for at least 6 months provides numerous infant and maternal benefits. Yet mothers with risk factors, such as lower education, lower socioeconomic status, younger maternal age, planned cesarean birth, and anxiety and depression, are more likely to stop breastfeeding in the early postpartum period. Few studies have focused on perinatal depression as a risk factor for breastfeeding cessation. To tailor effective interventions, nurses must first understand the lived experience of breastfeeding for mothers at risk for perinatal depression. A descriptive phenomenological study was conducted to elucidate the experience of breastfeeding for mothers with perinatal depression. The study was …
The Relationship Between Sense Of Belonging And Instructor Self-Efficacy Among Online Adjunct Faculty In Higher Education, Jillian Wojcik
The Relationship Between Sense Of Belonging And Instructor Self-Efficacy Among Online Adjunct Faculty In Higher Education, Jillian Wojcik
Electronic Theses and Dissertations 2010 - 2019
Given the increased reliance on adjunct faculty and the increased demand for online courses, the online adjunct faculty member is an important figure to know and understand. Unfortunately, there is a dearth of research on this population, particularly in terms of how their feelings of connection to their colleagues, administration, and their institution affects their beliefs about their online teaching abilities. This non-experimental correlational study investigated the relationship between sense of belonging and instructor self-efficacy among online adjunct faculty in higher education. Additionally, this study sought to determine if there is a predictive element between these two variables. This study …
The Relationships Among Sleep Quality, Fraility, And Falls In Older Adults Residing In The Community, Jacqueline Staal
The Relationships Among Sleep Quality, Fraility, And Falls In Older Adults Residing In The Community, Jacqueline Staal
Electronic Theses and Dissertations 2010 - 2019
One in three American older adults fall every year, making falls the leading cause of nonfatal injury treated in the emergency department (Centers for Disease Control and Prevention [CDC], 2013). Fall-related injuries cost the United States healthcare system nearly $30 billion a year and result in 27,000 deaths per year (Burns, Stevens, & Lee, 2016). The risk of falls increases with age, occurring more often in women than man. Age-related muscle weakness and functional decline contribute to fall risk. Age-related changes in neuroendocrine hormone production and shifts in circadian rhythms promote sleep disorders, affecting nearly two-thirds of older adults. Poor …
The Relationship Between Mcgregor’S Leadership Theory And Happiness Among Higher Educational Leaders, Jeannette S. Sullivan
The Relationship Between Mcgregor’S Leadership Theory And Happiness Among Higher Educational Leaders, Jeannette S. Sullivan
Electronic Theses and Dissertations 2010 - 2019
The purpose of this research was to determine if a relationship exists between McGregor’s Leadership Theory and subjective states of well-being among higher educational leaders in state and community colleges in Florida. The underlying supposition was that the preference for what Douglas McGregor called Theory X or Theory Y assumptions, indicate intrinsic assumptions about human nature and are linked to subjective happiness. Quantitative data were collected through electronic administration of two surveys and demographic questions to higher educational leaders at 28 state and community colleges in the State of Florida. These instruments measured levels of well-being through the PERMA-Profiler instrument …
Unrecognized Pasts And Unforeseen Futures: Architecture And Postcolonialism In William Faulkner's Absalom, Absalom! And The Sound And The Fury, Danielle Haugk
Unrecognized Pasts And Unforeseen Futures: Architecture And Postcolonialism In William Faulkner's Absalom, Absalom! And The Sound And The Fury, Danielle Haugk
Electronic Theses and Dissertations 2010 - 2019
This thesis examines the genesis, maintenance, and failure of rigid and exclusionary societal models present in William Faulkner's Yoknapatawpha County. Yi- Fu Tuan's analysis of the concepts space and place serves as the foundational theoretical framework by which human spatiality may be interpreted. Combining Tuan's observations and architectural analysis with Edouard Glissant's concepts of atavistic and composite societal models allows for a much broader consideration of various political ideologies present in the South. Following this, it becomes necessary to apply a postcolonial lens to areas of Faulkner's literature to examine how these societal models are upheld and the effects they …
The Wicked Decision Maker: A Collective Case Study Of Senior Student Affairs Officers Responding To At-Risk Student Retention, Aarika C. Camp
The Wicked Decision Maker: A Collective Case Study Of Senior Student Affairs Officers Responding To At-Risk Student Retention, Aarika C. Camp
Electronic Theses and Dissertations 2010 - 2019
The purpose of this collective case study was to discover the decision-making processes used by senior student affairs officers when making wicked decisions related to the retention of specialized, at-risk student populations. Wicked decisions are complex, resistant to resolutions, lead to other problems, and are essentially unique. In this study, decisions related to retention of Black males; students with mental health issues; and lesbian, gay, bisexual, transgender, and queer student retention fall within the wicked problem category and were the focus of this study. These decisions are usually the responsibility of divisions of student affairs in higher education settings and …
Time Orientation And The Ability To Envision The Distant Future Of Higher Education In A Community College, Gisela M. Diaz
Time Orientation And The Ability To Envision The Distant Future Of Higher Education In A Community College, Gisela M. Diaz
Electronic Theses and Dissertations 2010 - 2019
Although temporal issues affecting organizations and leaders have been researched, time orientation (preference for one or more of the present, past, and future time frames) and visioning ability of change agents within organizations remain open for additional investigation. This exploratory survey study compared self-reported time orientation (TO) and visioning ability ratings of administrators and faculty at a community college. The research added to the extant literature by contextualizing the measures of the key constructs and extending the research to a novel setting. Scores for all three time frames were assessed in contrast to studies that emphasize future orientation. In addition, …
Utilizing A Game Theoretical Approach To Prevent Collusion And Incentivize Cooperation In Cybersecurity Contexts, Arash Golchubian
Utilizing A Game Theoretical Approach To Prevent Collusion And Incentivize Cooperation In Cybersecurity Contexts, Arash Golchubian
Electronic Theses and Dissertations 2010 - 2019
In this research, a new reputation-based model is utilized to disincentivize collusion of defenders and attackers in Software Defined Networks (SDN), and also, to disincentivize dishonest mining strategies in Blockchain. In the context of SDN, the model uses the reputation values assigned to each entity to disincentivize collusion with an attacker. Our analysis shows that not-colluding actions become Nash Equilibrium using the reputationbased model within a repeated game setting. In the context of Blockchain and mining, we illustrate that by using the same socio-rational model, miners not only are incentivized to conduct honest mining but also disincentivized to commit to …
Water And Soil Salinity Mapping For Southern Everglades Using Remote Sensing Techniques And In Situ Observations, Fahad Khan Khadim
Water And Soil Salinity Mapping For Southern Everglades Using Remote Sensing Techniques And In Situ Observations, Fahad Khan Khadim
Electronic Theses and Dissertations 2010 - 2019
Everglades National Park is a hydro-ecologically significant wetland experiencing salinity ingress over the years. This motivated our study to map water salinity using a spatially weighted optimization model (SWOM); and soil salinity using land cover classes and EC thresholds. SWOM was calibrated and validated at 3-km grids with actual salinity for 1998–2001, and yielded acceptable R2 (0.89-0.92) and RMSE (1.73-1.92 ppt). Afterwards, seasonal water salinity mapping for 1996–97, 2004–05, and 2016 was carried out. For soil salinity mapping, supervised land cover classification was firstly carried out for 1996, 2000, 2006, 2010 and 2015; with the first four providing average accuracies …
Use Of An Iphone To Enhance Interpersonal Daily Living Skills In The Community For Adolescents With Autism Spectrum Disorder, Lindsey L. Wahlbrink
Use Of An Iphone To Enhance Interpersonal Daily Living Skills In The Community For Adolescents With Autism Spectrum Disorder, Lindsey L. Wahlbrink
Electronic Theses and Dissertations 2010 - 2019
This study examined the use of an iPhone and List Recorder application to teach three adolescents with autism spectrum disorder to enhance their interpersonal daily living skills in a community setting. Participants were taught to use interpersonal skills to perform an ordering and purchasing task. A multiple probe design across participants was used to demonstrate the effects of the intervention on the participants’ performance. Results indicated an increase in interpersonal skills used in a community setting. Participants were able to generalize these skills to another community setting. Finally, participants were able to demonstrate these skills once the intervention was removed …
Tracing A Technological God: A Psychoanalytic Study Of Google And The Global Ramifications Of Its Media Proliferation, Benton Fazzolari
Tracing A Technological God: A Psychoanalytic Study Of Google And The Global Ramifications Of Its Media Proliferation, Benton Fazzolari
Electronic Theses and Dissertations 2010 - 2019
This dissertation makes the connection between the human drive, as described by psychoanalysis, to construct God and the construction of the technological entity, Google. Google constitutes the extension of the early Christian period God to the twenty-first century. From the examination of significant religious and theological texts by significant theologians (Augustine, Thomas, Luther, Calvin, etc.) that explain the nature of God, the analogous relationship of God to Google will open a psychoanalytic discourse that answers questions on the current state of human mediation with the world. Freud and, more significantly, Lacan’s work connects the human creation of God, ex nihilio, …